most of the 2.X->3.0 commit (up to rev 4299) except for gtk2_ardour/editor_canvas.cc; builds and runs and does a few specific things but expect it to be buggy for a while yet

git-svn-id: svn://localhost/ardour2/branches/3.0@4313 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 19 insertions, 0 deletions

diff --git a/gtk2_ardour/ardour.sh.in b/gtk2_ardour/ardour.sh.in
index 4a7219823c..077073bdf6 100644
--- a/gtk2_ardour/ardour.sh.in
+++ b/gtk2_ardour/ardour.sh.in
@@ -18,6 +18,25 @@ if [ "$MLOCK_LIMIT" != "unlimited" ]; then
 
 fi
 
+## Glib atomic test
+
+GLIB=$(ldd %INSTALL_PREFIX%/%LIBDIR%/ardour2/ardour-%VERSION% 2> /dev/null | grep glib-2.0 | sed 's/.*=> \([^ ]*\) .*/\1/')
+
+if [ "$GLIB" = "" ]; then
+	echo "WARNING: Could not check your glib-2.0 for mutex locking atomic operations."
+	echo ""
+elif [ $(nm -D --radix=dec --defined-only -S $GLIB | grep -w g_atomic_int_add | cut -d ' ' -f 2) -gt 32 ]; then
+	echo "WARNING: Your system contains a suspect libglib-2.0. Your version might be built"
+	echo "         to use mutex locking atomic operations. This is a fallback solution to"
+	echo "         a more robust hardware supported atomicity. It might cause reduced "
+	echo "         performance and/or deadlocks. Please contact your distribution support"
+	echo "         about this issue."
+	echo "         Unfortunately this check is not 100% accurate, so this might not be"
+	echo "         the case with your system."
+	echo ""
+fi
+
+exec %INSTALL_PREFIX%/%LIBDIR%/ardour2/ardour-%VERSION% "$@"
 
 ## Glib atomic test